Find which airlines fly direct from Heathrow to Seattle/Tacoma Intl, which days they fly and book direct flights.
Nonstop departures
Monday
Aer Lingus, Aeromexico, Air France, +8 more
Aer Lingus, Aeromexico, +9 more
7
8
Tuesday
Aer Lingus, Aeromexico, Air France, +8 more
Aer Lingus, Aeromexico, +9 more
7
8
Wednesday
Aer Lingus, Aeromexico, Air France, +8 more
Aer Lingus, Aeromexico, +9 more
7
8
Thursday
Aer Lingus, Aeromexico, Air France, +8 more
Aer Lingus, Aeromexico, +9 more
7
8
Friday
Aer Lingus, Aeromexico, Air France, +8 more
Aer Lingus, Aeromexico, +9 more
7
8
Saturday
Aer Lingus, Aeromexico, Air France, +8 more
Aer Lingus, Aeromexico, +9 more
7
8
Sunday
Aer Lingus, Aeromexico, Air France, +8 more
Aer Lingus, Aeromexico, +9 more
7
8
Nonstop returns
Monday
Aer Lingus, Aeromexico, Air France, +8 more
Aer Lingus, Aeromexico, +9 more
7
8
Tuesday
Aer Lingus, Aeromexico, Air France, +8 more
Aer Lingus, Aeromexico, +9 more
7
8
Wednesday
Aer Lingus, Aeromexico, Air France, +8 more
Aer Lingus, Aeromexico, +9 more
7
8
Thursday
Aer Lingus, Aeromexico, Air France, +8 more
Aer Lingus, Aeromexico, +9 more
7
8
Friday
Aer Lingus, Aeromexico, Air France, +8 more
Aer Lingus, Aeromexico, +9 more
7
8
Saturday
Aer Lingus, Aeromexico, Air France, +8 more
Aer Lingus, Aeromexico, +9 more
7
8
Sunday
Aer Lingus, Aeromexico, Air France, +8 more
Aer Lingus, Aeromexico, +9 more
7
8
London (undefined)United Kingdom
Seattle (SEA)United States